Today the world's population is over six billion, six hundred and sixty-six million, six hundred and sixty-six thousand, six hundred and sixty-six.

According to calculations, the world's population will exceed 6,666,666,666 on Friday. This is undoubtedly an interesting number, but it is also a frightening one. The rate of population growth is simply too fast. Just think, 14 years ago, the earth's population had just surpassed 5,555,555,555, and 80 years ago, there were only 2 billion people worldwide. Also, according to similar calculation methods, the remaining number of IPv4 IP addresses is approaching 666,666,666, likely reaching this figure today or tomorrow.